Cartridge.



G. E. LOEBLB.

CARTRIDGE.

.APPLICATIONv FILED 00T. 27, 1909.

963,911. Patented Ju1y12,1910. v

GTTLGB E. LGEBLE, 0F NEW YORK, lll'.V Y.

CARTRIDGE.

963.gif l.

Speccation of Letters Eatent.

Patented July l2, i910.

pplcation filed October 27, 1909. Serial No. 524,857.

To all whom 'it may concern:

' Bc it known that l, Go'r'rnon ELonnLn, a citizen of the United States,residing in the city of New York, bprough of Brooklyn, in the county ofKings and State of New York, have invented a certain new and usefullmproveinent in Cartridges, of which the following is a specification.

The invention relates to fixed ammunition for firearms, and the mainobject of the iiivcntion is to provide a construction which. the shockof recoil is lessened, thus permitting charges of greater efliciency tobe safely employed.

Another important object is to provide a sealed or completely closedbase with space ,for the fulminate gases to expand harmlessly at theinstant of explosion and thus lesson the danger due to the escape ofsuch gases rearwardly through the base of the shell, and permit withsafety the use of large fulminate charges insuring certainty of lire. Y

The invention consists in certain novel features, and details ofconstruction and arrangement by which the above objects are attained, tobe hereinafter described.

The accompanying drawings form a partv of this spccilication and showapproved forms of the invention. A

Figure l is an axial section through the rear portion of a paper shelladapted for use in a shotgun. Fig. 2 is a viewof the rear face thereof.Fig. 3 is a transverse section of the same showing' the interiorportions in elevation. Fig. d is a view of the rear face of thebase-block. AFig. 5 is a corresponding` view of the front face. Fig. (3is a. side elevation of the same base-block. Fig. 7 is an end view ofthe primer. Fig. 8 is a similar view of the anvil. Fig. 9 is a side viewof the powder-cup or recoil absorber. Fig. l() is an axial sectionthrough the rear portion of a metallic shell cartridge showing amodified forni of the invention. Fig. ll is a view of the rear face ofthe. basc-blocl thorefor. Fig. l2 is an axial section through abase-block and attached powder-cup, showing anotlwr niodilication.

Similar letters lof reference indicato like parts .in all the ligures.

Referring lto Figs. l to 9 inclusive, showing .the invention as appliedto a paper shotshell, A is the metallic base, l the paper tube receivedtherein and flanged inwardly at Bl telic against the inner face of thethe thickness of the flange B1 thus provid- A ing an annular space Z)for the expansion of fulminatc gases, which space is increased by theannular channel c2 in the rear ,face of the base-block.

D is a cup of sheet metal, cylindrical at the forward open' end D1 whichmatches y closely within the paper tube B, and tapered slightly to thebottom D2 and rovided with longitudinal lcori-uga.tions 3 extending fromthe bottoni to the cylindrical portion at the front. The bottom isperforated cen- 'trallyto match to the opening c in the basebloclr andis secured to the latter upon the boss C1 by expanding and curling the`forward end El of the primertube upon the inner face of the bottom D2 asat E2.

The primer-tube E is of metal slightly tapered and is received in thecounterbore c1 of the base-block, the eXtensionE1 is of less diameterand forms an annular shoulder or offset lying upon the shoulder orrabbet C3. The rear end of the tube E is curled outwardly at t3 upon thenipple C2 and thus serves with the flange E2 as a hollow rivet firmlyjoining the cup D to the base-block C.

lNithin the primer-tube is an anvil F having lire openings ftherethrough, and a primer G carrying fulminate g presented to theanvil. The rear face of the primer lies against the inner face of themetallic base A in position to be struck and forced forward by theaction of the ring-pin of the gun against the sealed base.

The primer (i is a small cylindrical or ,slightly tapered block havingacavity in its front face, .shown as an annular V-shaped channel, andthe anvil F is a similar block having an angular spur, shown as a sharpannular ridge F1, adapted to induce the required friction with thefulminate when the latter is forced forward bythe impact of thetiring-pin upon the base of they shell, the

lire passing through the openings f in the anvil to ignite the powder'charge.

esami The forward movement of the conical primer in the taperedprimer-tube tends to tightly seal or plug the latter against the escapeof fulminate gases rearwardly, but iii the event of such escape past theprimer the gases may expand liarinlessly iii the space b c2 withoutdanger of bursting the closed metal base A.

The charge of oivder is received in the cup D, held therein by the WadIl, and on exploding performs its function as usual, but the initialrearward shock due to the eX- plosioii is lessened by the expansion ofthe corrugations l)3 into the surrounding space' within the cartridge,thus reducing the recoil of thevgun for a given charge of powder, or,correlatively, permitting the use of ay larger or heavier charge.

Fig. l0 shows a metallic cartridge iii .which the powder-cup D* is moresharply tapered and isjoined to the base-block C* by spreading therein aflange C5 formed directly on the front face of the block. In thiscartridge the anvil F2 is formed integral with the base-block andreceives the primer G2, the primer-tube being omitted.

In tlie't'orin shown iii Fig, 12 the powdercup D5 is simply joined tothe base-block (1 and the latter is boredx and counterbored to receivethe anvil F3 and primer G3 Without employing fa. primer-tube.

Either the'ipigiiner or anvil .may receive the charge of iuhninate, orboth may be 'charged as indicated in Fig/12.

Other modifications may be made in the forms and proportions of theparts within wide limits without departing from the invention, and partsmay be used withoutthe whole. rl`he powder-cup may be variously formedto provide the required expansibility, and be secured in place in anyapproved manner, and the charge therein fired by any suitable primer andlii'ing means.

The cup shown in Fig. 1 is designed for service willi a noi-mal chargeoli bulk powder` of *any standard malte, the sharply tapered-forni shownin Figs. l() and 12 is intended to serve with dense powders; in allcases the air imprisoned in the spaces between the exteriorl of theexpansible cup and interior of the shell serves as an air cushion toabsorb the shock of recoil, and such spaces should be proportioned tothe quantity and character of the powder used in charging the shell.

1. In a cartridge, a base and shell, an cxpinsiblo cup locatedadi'acenty to said base and within said shell and adapted to expand withthe explosion of a charge ot powder v received in saidcup.

i2. In a cartridge, a base and shell, a conical cup locatedadjacent t'osaid base andivithin said shell and adapted to expand with the explosionof a charge of powder received in said cup.

3. ln a cartridge, a base and shell, a corrugated cup located adjacentto said base and within said shell and adapted to expand with theexplosion of a charge ot powder received in said cup.

4. In a cartridge, a base and shell, a corrugated cup secured to saidbase and having a cylindrical open end matching the interior ol saidshell and adapted to expand with lthe explosion of a charge of powderreceived i'n said cup. v

In a cartridge, a base and shell, aconical cup secured to said base,having loiigitudinal corrugations, and a cylindrical open end matchingthe interior of said shell, 'and adapted to expand` with the explosionof a charge of powder received in said cup.

lso

G. In a cartridge, a closed base, a baseture in its'bottom, aprimer-tube extending through said opening and apeitureand se curingsaid cup to said base-blo'clgtanda primer and anvil 1n said tube, allarranged to serve with the base and shell of a car` tridge.

9. In a cartridge, a closed base, a shell, a base-block located withinsaid shell and ad- `jacent to said base and having an openingtherethrough, a powder-cup having a bot.-

toni, a cylindrical open end matching the in tcrior of said shell andcorrugations between said 4cylindrical end and bottom, a primertubeextending. through said opening andiA said bottom and securing said-cubase-block, and a primer and anvil in said tube.

to' said: 1

Iii testimony that I claim the inventionl i ence of two witnesses.

GOTTLOB F. LOEBLE.

lvitnesses:

(Iii/muis R'. Signum, l". J. Gminnii.

